Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE)

Question 155725: Find an equation of the line containing the given pair of points. Express your answer in the form x=a, y=b, or y=mx+b.
(-2,-2) and (1,1)

Click here to see answer by checkley77(12844)

Question 155734: Write an equation of the line containing the given point and parallel to the given line. Express you answer in the form y=mx+b
(8,9); 9x+y=6

Click here to see answer by checkley77(12844)

Question 155981: Find the x-intercepts
y=x^2+4x-1

Click here to see answer by checkley77(12844)

Question 155978: The so-called golden rectangle is said to be extremely pleasing visually and was used often by ancient Greek and Roman architects. The length of a golden rectangle is approximately 1.6 times the width. Find the dimensions of a golden rectangle if its area is 9000m^2.
Click here to see answer by checkley77(12844)

Question 155985: h=16t^2+vt+s for t
Click here to see answer by Earlsdon(6294)

Question 155990: y^2=x+1. Find the vertex, x and y intercepts, and sketch the graph. Please help, I have no idea what to do with this!!!
Click here to see answer by stanbon(75887)

Question 156046: Find the slope-intercept equation of the line that has the given characteristics y=1.7x+9
Click here to see answer by stanbon(75887)

Question 156072: Please help me solve the following problem:
k^3+8/k^2-4
Click here to see answer by orca(409)

Question 156044: Find the intercepts of 1.1x-1.9y=4.18 and graph the equation.
Click here to see answer by orca(409)

Question 156071: Please help me solve the following question:
x^3-27/x-3
That's x cubed minus 27 divided by x-3
Click here to see answer by oscargut(2103)

Question 156105: one side of a right triangle is half the hypotenuse and the other side is 12cm. Find the length of the hypotenuse.
Click here to see answer by oscargut(2103)

Question 156058: Find the slope-intercept equation of the line that has the given characteristics y=1.7x+9
Click here to see answer by Fombitz(32388)

Question 156124: CAN YOU HELP? √x-3-3=4
Thank you
Click here to see answer by Fombitz(32388)

Question 156148: Solve
15x^4-31x^2+10=0
The solution of x= ??
Click here to see answer by jim_thompson5910(35256)

Question 156147: I have a swan that weighs 25 lbs. and is 4 ft. long. Using this equation what is the L in wing span in feet.
Equation: L=2.43*W^0.3326
Click here to see answer by jim_thompson5910(35256)

Question 155983: Evaluate the discriminant b^2-4ac. Then use the answer to state how many real-number solutions exist for the equation.
〖y=x〗^2+8x+16

Click here to see answer by SAT Math Tutor(36)

Question 156043: Write an equation of the line containing the given point and perpendicular to the given line.
(6,-2); 7x+6y=5
Click here to see answer by checkley77(12844)

Question 156335: then
Click here to see answer by oscargut(2103)

Question 156350: Solve 6x^2+3x-18=0 using the quadratic formula
Click here to see answer by oscargut(2103)

Question 156350: Solve 6x^2+3x-18=0 using the quadratic formula
Click here to see answer by jim_thompson5910(35256)

Question 156359: State the domain of the following:
f(x)= square root x+4
Click here to see answer by nabla(475)

Question 156368: In this equation: 3 √x -5=3 what does x equal?
Click here to see answer by Alan3354(69443)

Question 156375: solve the equation for x
Click here to see answer by jim_thompson5910(35256)

Question 156383: for what value(s) of k is the line 2x=3y+k a tangent to the parabola y=x^2-3x+4?
Click here to see answer by stanbon(75887)

Question 156379: find the distance between the poionts of intersection of the line with equation y=2x+1 and the parabola with equation y=x^2-4x+6.
Click here to see answer by Alan3354(69443)

Question 156380: Find the value of a such that the line y=x^2+a has exactly one intersection point with the parabola with equation y=x^2+3x+2.
Click here to see answer by Alan3354(69443)

Question 156381: if the graph of the function f(x)=4x^2-20x-4 intersects the graph of the function g(x)=1+4x-x^2 at the point (m,k), show that the other point of intersection occurs where x= -1/m.
Click here to see answer by Edwin McCravy(20054)

Question 156496: A flagpole is secured on opposite sides by two guy wires, each of which is 7 ft longer than the pole. The distance between the points where the wires are fixed to the ground is equal to the length of one guy wire. How tall is the flagpole? (to the nearest inch)
I have no idea how to solve this :(
Click here to see answer by Earlsdon(6294)

Question 156479: The current in a stream moves at a speed of 3mph. A boat travels 45mi upstream and 45mi downstream in a total time of 8 hr. What is the speed of the boat in still water?
Click here to see answer by ptaylor(2198)

Question 156612: A wire 350 mm long is cut in two pieces. The first piece is shaped into a circle, and the second piece is shaped into a square. Both shapes have the same area. What is the length of each wire?
I have no idea where to even start on this problem, so please help!
Click here to see answer by gonzo(654)

Question 156636: graph the quadritic equation
y= x^2 +2x

Click here to see answer by Alan3354(69443)

Question 156236: Find the intercepts and then use them to graph the equation
1.1x-1.9y=4.18
I need to plot the points
Click here to see answer by Alan3354(69443)

Question 156550: In 1994, the life expectancy of males in a certain country was 69.6 years. In 2001, it was 73.3 years. Let E represent the life expectancy in year t and let t represent the number of years since 1994.
The linear function E(t)that fits the data is,
E(t)= t+
(Round to the nearest tenth.)
Click here to see answer by stanbon(75887)

Question 156633: x^2 + square root 22=0

Click here to see answer by Alan3354(69443)

Question 156657: x(x+8)=000
Click here to see answer by oscargut(2103)

Question 156693: Solve by completing the square.
4x + 2 = x^2
Click here to see answer by jim_thompson5910(35256)

Question 156718: 2x^2+8x+15=0
Click here to see answer by jim_thompson5910(35256)

Question 156718: 2x^2+8x+15=0
Click here to see answer by oscargut(2103)

Question 156718: 2x^2+8x+15=0
Click here to see answer by josmiceli(19441)

Question 156738: write the equation of a quadratic f(x) such that f(0)=8 and a vertex at x=0.
Click here to see answer by jim_thompson5910(35256)

Question 156386: show that the equations y=kx-1 and y=x^2+(k-1)x+k^2 have no real solution for all values of k.
Click here to see answer by Edwin McCravy(20054)

Question 156773: Use the quadratic equation to solve
2x^2-5x=-9
Use i if complex answer.
i would appreciate a breakdown of the solution..Thanks
Click here to see answer by jim_thompson5910(35256)

Question 156760: The question is solve:

The closet I have come to solving this is probably way off.
I have ended up with:
and

Any help would be greatly appreciated.
Thanks to all the online tutors out there...
Bill W

Click here to see answer by edjones(8007)

Question 156799: 3x^3-24
Since 24 is not a perfect cube I think I factor out the 3 as follows:
3(x^3-8)
Am I on the right track?
Click here to see answer by nerdybill(7384)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840, 6841..6885, 6886..6930, 6931..6975, 6976..7020, 7021..7065, 7066..7110, 7111..7155, 7156..7200, 7201..7245, 7246..7290, 7291..7335, 7336..7380, 7381..7425, 7426..7470, 7471..7515, 7516..7560, 7561..7605, 7606..7650, 7651..7695, 7696..7740, 7741..7785, 7786..7830, 7831..7875, 7876..7920, 7921..7965, 7966..8010, 8011..8055, 8056..8100, 8101..8145, 8146..8190, 8191..8235, 8236..8280, 8281..8325, 8326..8370, 8371..8415, 8416..8460, 8461..8505, 8506..8550, 8551..8595, 8596..8640, 8641..8685, 8686..8730, 8731..8775, 8776..8820, 8821..8865, 8866..8910, 8911..8955, 8956..9000, 9001..9045, 9046..9090, 9091..9135, 9136..9180, 9181..9225, 9226..9270, 9271..9315, 9316..9360, 9361..9405, 9406..9450, 9451..9495, 9496..9540, 9541..9585, 9586..9630, 9631..9675, 9676..9720, 9721..9765, 9766..9810, 9811..9855, 9856..9900, 9901..9945, 9946..9990, 9991..10035, 10036..10080, 10081..10125, 10126..10170, 10171..10215, 10216..10260, 10261..10305, 10306..10350, 10351..10395, 10396..10440, 10441..10485, 10486..10530, 10531..10575, 10576..10620, 10621..10665, 10666..10710, 10711..10755, 10756..10800, 10801..10845, 10846..10890, 10891..10935, 10936..10980, 10981..11025, 11026..11070, 11071..11115, 11116..11160, 11161..11205, 11206..11250, 11251..11295, 11296..11340, 11341..11385, 11386..11430, 11431..11475, 11476..11520, 11521..11565, 11566..11610, 11611..11655, 11656..11700, 11701..11745, 11746..11790, 11791..11835, 11836..11880, 11881..11925, 11926..11970, 11971..12015, 12016..12060, 12061..12105, 12106..12150, 12151..12195, 12196..12240, 12241..12285, 12286..12330, 12331..12375, 12376..12420, 12421..12465, 12466..12510, 12511..12555, 12556..12600, 12601..12645, 12646..12690, 12691..12735, 12736..12780, 12781..12825, 12826..12870, 12871..12915, 12916..12960, 12961..13005, 13006..13050, 13051..13095, 13096..13140, 13141..13185, 13186..13230, 13231..13275, 13276..13320, 13321..13365, 13366..13410, 13411..13455, 13456..13500, 13501..13545, 13546..13590, 13591..13635, 13636..13680, 13681..13725, 13726..13770, 13771..13815, 13816..13860, 13861..13905, 13906..13950, 13951..13995, 13996..14040, 14041..14085, 14086..14130, 14131..14175, 14176..14220, 14221..14265, 14266..14310, 14311..14355, 14356..14400, 14401..14445, 14446..14490, 14491..14535, 14536..14580, 14581..14625, 14626..14670, 14671..14715, 14716..14760, 14761..14805, 14806..14850, 14851..14895, 14896..14940, 14941..14985, 14986..15030, 15031..15075, 15076..15120, 15121..15165, 15166..15210, 15211..15255, 15256..15300, 15301..15345, 15346..15390, 15391..15435, 15436..15480, 15481..15525, 15526..15570, 15571..15615, 15616..15660, 15661..15705, 15706..15750, 15751..15795, 15796..15840, 15841..15885, 15886..15930, 15931..15975, 15976..16020, 16021..16065, 16066..16110, 16111..16155, 16156..16200, 16201..16245, 16246..16290, 16291..16335, 16336..16380, 16381..16425, 16426..16470, 16471..16515, 16516..16560, 16561..16605, 16606..16650, 16651..16695, 16696..16740, 16741..16785, 16786..16830, 16831..16875, 16876..16920, 16921..16965, 16966..17010, 17011..17055, 17056..17100, 17101..17145, 17146..17190, 17191..17235, 17236..17280, 17281..17325, 17326..17370, 17371..17415, 17416..17460, 17461..17505, 17506..17550, 17551..17595, 17596..17640, 17641..17685, 17686..17730, 17731..17775, 17776..17820, 17821..17865, 17866..17910, 17911..17955, 17956..18000, 18001..18045, 18046..18090, 18091..18135, 18136..18180, 18181..18225, 18226..18270, 18271..18315, 18316..18360, 18361..18405, 18406..18450, 18451..18495, 18496..18540, 18541..18585, 18586..18630, 18631..18675, 18676..18720, 18721..18765, 18766..18810, 18811..18855, 18856..18900, 18901..18945, 18946..18990, 18991..19035, 19036..19080, 19081..19125, 19126..19170, 19171..19215, 19216..19260, 19261..19305, 19306..19350, 19351..19395, 19396..19440, 19441..19485, 19486..19530, 19531..19575, 19576..19620, 19621..19665, 19666..19710, 19711..19755, 19756..19800, 19801..19845, 19846..19890, 19891..19935, 19936..19980, 19981..20025, 20026..20070, 20071..20115, 20116..20160, 20161..20205, 20206..20250, 20251..20295, 20296..20340, 20341..20385, 20386..20430, 20431..20475, 20476..20520, 20521..20565, 20566..20610, 20611..20655, 20656..20700, 20701..20745, 20746..20790, 20791..20835, 20836..20880, 20881..20925, 20926..20970, 20971..21015, 21016..21060, 21061..21105, 21106..21150, 21151..21195, 21196..21240, 21241..21285, 21286..21330, 21331..21375, 21376..21420, 21421..21465, 21466..21510, 21511..21555, 21556..21600, 21601..21645, 21646..21690, 21691..21735, 21736..21780, 21781..21825, 21826..21870, 21871..21915, 21916..21960, 21961..22005, 22006..22050, 22051..22095, 22096..22140, 22141..22185, 22186..22230, 22231..22275, 22276..22320, 22321..22365, 22366..22410, 22411..22455, 22456..22500, 22501..22545, 22546..22590, 22591..22635, 22636..22680, 22681..22725, 22726..22770, 22771..22815, 22816..22860, 22861..22905, 22906..22950, 22951..22995, 22996..23040, 23041..23085, 23086..23130, 23131..23175, 23176..23220, 23221..23265, 23266..23310, 23311..23355, 23356..23400, 23401..23445, 23446..23490, 23491..23535, 23536..23580, 23581..23625, 23626..23670, 23671..23715, 23716..23760, 23761..23805, 23806..23850, 23851..23895, 23896..23940, 23941..23985, 23986..24030, 24031..24075, 24076..24120, 24121..24165, 24166..24210, 24211..24255, 24256..24300, 24301..24345, 24346..24390, 24391..24435, 24436..24480, 24481..24525, 24526..24570, 24571..24615, 24616..24660, 24661..24705, 24706..24750, 24751..24795, 24796..24840, 24841..24885, 24886..24930, 24931..24975, 24976..25020, 25021..25065, 25066..25110, 25111..25155, 25156..25200, 25201..25245, 25246..25290, 25291..25335, 25336..25380, 25381..25425, 25426..25470, 25471..25515, 25516..25560, 25561..25605, 25606..25650, 25651..25695, 25696..25740, 25741..25785, 25786..25830, 25831..25875, 25876..25920, 25921..25965, 25966..26010, 26011..26055, 26056..26100, 26101..26145, 26146..26190, 26191..26235, 26236..26280, 26281..26325, 26326..26370, 26371..26415, 26416..26460, 26461..26505, 26506..26550, 26551..26595, 26596..26640, 26641..26685, 26686..26730, 26731..26775, 26776..26820, 26821..26865, 26866..26910, 26911..26955, 26956..27000, 27001..27045, 27046..27090, 27091..27135, 27136..27180, 27181..27225, 27226..27270, 27271..27315, 27316..27360, 27361..27405, 27406..27450, 27451..27495, 27496..27540, 27541..27585, 27586..27630, 27631..27675, 27676..27720, 27721..27765, 27766..27810, 27811..27855, 27856..27900, 27901..27945, 27946..27990, 27991..28035, 28036..28080, 28081..28125, 28126..28170, 28171..28215, 28216..28260, 28261..28305, 28306..28350, 28351..28395, 28396..28440, 28441..28485, 28486..28530, 28531..28575, 28576..28620, 28621..28665, 28666..28710, 28711..28755, 28756..28800, 28801..28845, 28846..28890, 28891..28935, 28936..28980, 28981..29025, 29026..29070, 29071..29115, 29116..29160, 29161..29205, 29206..29250, 29251..29295, 29296..29340, 29341..29385, 29386..29430, 29431..29475, 29476..29520, 29521..29565, 29566..29610, 29611..29655, 29656..29700, 29701..29745, 29746..29790, 29791..29835, 29836..29880, 29881..29925, 29926..29970, 29971..30015, 30016..30060, 30061..30105, 30106..30150, 30151..30195, 30196..30240